论文标题
FCNC B衰变中的非分量性迷人循环与B-Decay半衰减形式。
Non-factorizable charming loops in FCNC B decays vs B-decay semileptonic form factors
论文作者
论文摘要
我们将不可分化的迷人环校正与$ b $ -Meson的3粒子浆酸度幅度（3bs）表示，比较了fcnc $ b $ b $ decay，$ b $ -MESON，$ \ langle 0 | \ langle 0 | \ bar q（x）g_ {x） $ b $ -Meson半蛋白质外形。尽管有一定的相似性，但这两个校正被证明具有实质性差异：外形因子校正由3BS的界点轻曲构型支配：$z_μ= ux_μ$，$ 0 <u <1 $，$ x^2 = 0 $。相比之下，FCNC振幅由不同的构型主导，并具有非共线参数：$ x^2 = 0 $，$ z^2 = 0 $，但是$（x-z）^2 \ ne 0 $（即$ z____________ \ ne ne u x__x_μ$）。
We compare a non-factorizable charming-loop correction to an exclusive FCNC $B$-decay given in terms of the 3-particle Bethe-Salpeter amplitude (3BS) of the $B$-meson, $\langle 0|\bar q(x)G_{μν}(z)b(0)|B(p)\rangle$, with the corresponding correction to the $B$-meson semileptonic form factor. In spite of certain similarities, these two corrections are shown to have substantial differences: The form factor correction is dominated by the collinear light-cone configuration of 3BS: $z_μ= u x_μ$, $0 < u < 1$, $x^2=0$. In contrast, the FCNC amplitude is dominated by a different configuration with non-collinear arguments: $x^2=0$, $z^2=0$, but $(x-z)^2\ne 0$ (i.e., $z_μ\ne u x_μ$).
